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1996 Chevrolet Impala SS 5.7L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy
Posted to GM Driveability on 6/22/2010 11 Replies

Car will start but runs rich hot or cold, once it runs, it runs great, o2 readings rich,fuel trims trying to take away fuel, fuel presure reg not leaking.

11 Replies Received (View Replies)

  Related Documents & Media  1996 Chevrolet Impala SS

 
Message Closed w/FIX

car Vehicle Data

1996 Chevrolet Impala SS

VIN 1G1BL52P3T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Poor Fuel Economy
OccursOn Start Up

Trouble Codes

P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0161Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

1996 Chevrolet Impala SS

VIN 1G1BL52P3T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Poor Fuel Economy
OccursOn Start Up

Trouble Codes

P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0161Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction